/*
 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Sly Technologies, Inc.
 *
 * This file is part of jNetPcap.
 *
 * jNetPcap is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as 
 * published by the Free Software Foundation, either version 3 of 
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jnetpcap.util;

import java.lang.reflect.Constructor;

// TODO: Auto-generated Javadoc
/**
 * The Class JThreadLocal.
 * 
 * @param <T>
 *          the generic type
 * @author Mark Bednarczyk
 * @author Sly Technologies, Inc.
 */
public class JThreadLocal<T>
    extends ThreadLocal<T> {

	/** The constructor. */
	private final Constructor<T> constructor;

	/**
	 * Instantiates a new j thread local.
	 */
	public JThreadLocal() {
		super();
		constructor = null;
	}
	
	/**
	 * Instantiates a new j thread local.
	 * 
	 * @param c
	 *          the c
	 */
	public JThreadLocal(Class<T> c) {
		try {
	    constructor = c.getConstructor();
    } catch (Exception e) {
    	throw new IllegalArgumentException(e);
    } 
	}

	/**
	 * Initial value.
	 * 
	 * @return the t
	 * @see java.lang.ThreadLocal#initialValue()
	 */
	@Override
  protected T initialValue() {
		if (constructor == null) {
			return super.initialValue();
		} else {
			try {
	      return constructor.newInstance();
      } catch (Exception e) {
      	throw new IllegalStateException(e);
      }
		}
  }

}
